Problem: What is the strongest type of intermolecular force present in NH2CH3?A. dispersion B. dipole-dipole C. hydrogen bonding D. ion-dipole E. none of these

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Intermolecular Forces (IMF) are the attractive forces between 2 molecules.


▪ strongest IMF
▪ deals with the attraction between an ion and a polar compound.

 Hydrogen Bonding

▪ 2nd strongest IMF
▪ exists anytime hydrogen is directly connected to fluorine, oxygen or nitrogen


▪ 3rd strongest IMF
▪ exists when two polar covalent compounds interact

Dipole/Induced Dipole

▪ 4th strongest IMF
▪ deals with the attraction between a polar and nonpolar covalent compound 

London-Dispersion Forces/Van der Waals Force/Induced Dipole-Induced Dipole

▪ weakest IMF
▪ intermolecular force is found in all compounds, but it's the main intermolecular force of nonpolar covalent compounds

For NH2CH3: The total number of valence electrons present in NH2CH3 is:

            Group            Valence Electrons

C         4A                   1 × 4 e = 4 e

H         1A                   5 × 1 e = 5 e

N         5A                   1 × 5 e = 5 e

Total:  14 valence e

The Lewis structure of NH2CH3 is:

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Problem Details

What is the strongest type of intermolecular force present in NH2CH3?

A. dispersion 

B. dipole-dipole 

C. hydrogen bonding 

D. ion-dipole 

E. none of these

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